<% @rubyists.each do |user| -%>
  <%= render :partial => 'user', :object => user %>
<% end -%>

<% @pythonists.each do |user| -%>
  <%= render :partial => 'user', :object => user %>
<% end -%>

<% @guests.each do |user| -%>
  <%= render :partial => 'user', :object => user %>
<% end -%>